CVE-2026-46301: spi: topcliff-pch: fix use-after-free on unbind
Vulnerability summary
CVE-2026-46301 is a high (CVSS 7.8) Use After Free vulnerability in linux. EPSS estimates a 0.12% chance of exploitation in the next 30 days, higher than 1.6% of scored vulnerabilities.
Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 44 · Related 44Timeline
- 08-06-2026PublishedVulnerability first disclosed.
- 14-06-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: spi: topcliff-pch: fix use-after-free on unbind Give the driver a chance to flush its queue before releasing the DMA buffers on driver unbind
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.12%
Chance of exploitation in the next 30 days
Percentile
2%
Versus all other CVEs
30-day change
Decrease -0.05 pp
From 0.17% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu166 products
- linuxAll versions (No fix recorded) | < 5.15.0-186.196 | < 6.8.0-136.136 | < 7.0.0-28.28
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 5.15.0-1112.119 | < 6.8.0-1061.64 | < 7.0.0-1009.9
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ c37f3c2749b53225d36faa5c583203c5f12ae15b, < 43334836b907adc21eab3079d2e6b26754468786 | ≥ c37f3c2749b53225d36faa5c583203c5f12ae15b, < 36e58c436d2c2a797800427dc04d74ffd8b6ce1c | ≥ c37f3c2749b53225d36faa5c583203c5f12ae15b, < 4ca90deeca1c7dd72c1c380ba8143565516def2d | ≥ c37f3c2749b53225d36faa5c583203c5f12ae15b, < d79e92161b65832e0b8cad5f3d84d17e5cd7a970 | ≥ c37f3c2749b53225d36faa5c583203c5f12ae15b, < 8822980668c96b5aa251c1e2daec1873262b8f3f | ≥ c37f3c2749b53225d36faa5c583203c5f12ae15b, < d50ef3553acbacce6f2843304d41d06dca358bb6 | ≥ c37f3c2749b53225d36faa5c583203c5f12ae15b, < 0e8e57f9737ea257634db1d152fc430a0788a3e1 | ≥ c37f3c2749b53225d36faa5c583203c5f12ae15b, < 9d72732fe70c11424bc90ed466c7ccfa58b42a9a | 3.1
- linux_kernel≥ 3.1, < 5.10.258 | ≥ 5.11, < 5.15.209 | ≥ 5.16, < 6.1.175 | ≥ 6.2, < 6.6.140 | ≥ 6.7, < 6.12.88 | ≥ 6.13, < 6.18.30 | ≥ 6.19, < 7.0.7
Debian1 product
- linux< 6.1.176-1 | < 6.12.88-1 | < 7.0.7-1
3 vendors · 169 products
